Non-contact charger available of wireless data and power transmission, charging battery-pack and mobile device using non-contact charger

ABSTRACT

Disclosed is a non-contact charger. The present invention provides a non-contact charger capable of wireless data communication and power supply between a non-contact charger capable of computer UBS communication and a charging battery-pack of a mobile device, using an induced electromotive force, thereby to enable data communication and power supply at the same time and to make good signal transmission without other poor contacts in the contact transmission.

This is a continuation of application Ser. No. 11/817,929, filed Sep. 6,2007, which claims priority under 35 U.S.C. §119(a) to Korean PatentApplication No. 10-2006-0103254, filed on Oct. 24, 2006, in the KoreanIntellectual Property Office. The contents of all of these priorityapplications are incorporated herein by reference in their entirety asif set forth in full.

TECHNICAL FIELD

The present invention relates to a non-contact charger, and moreparticularly to a non-contact charger capable of wireless datacommunication and power supply between a non-contact charger capable ofcomputer UBS communication and a charging battery-pack of a mobiledevice, using an induced electromotive force, thereby to enable datacommunication and power supply at the same time and to make good signaltransmission without other poor contacts in the contact transmission.

BACKGROUND ART

Generally, mobile devices are apparatuses that users easily hold and usewhile moving along, and includes mobile phones, PDA, MP3 players, etc.

These mobile devices are configured so that they can be used for acertain period by mounting a charged battery in a mobile device orcharging a battery installed inside the mobile device. Therefore, themobile devices provide conveniences to allow them to receive requireddata from a desk-top computer or a notebook computer and operate desiredfunctions by re-charging their batteries, if necessary.

In Korean Patent Publication No. 10-2001-0026976 (charging equipment forhand phone), a charger for mobile phones used for these mobile devicesis configured so that an externally supplied power line can be providedin one side of a body 600, a lower portion of a mobile phone 610 isinserted into an upper mounting space 601 of the body 600, and aninternal device 602 in the upper mounting space 601 of the body 600 cancome in contact with a power device in a rear lower portion of themobile phone 610 to supply a power source to the mobile phone 610, asshown in FIG. 11.

These conventional power supply devices have disadvantages that theyshould be connected to a computer using a separate data cable since theyfunction to supply a power source but not to transmit or process data.The power supply devices also problems that repeated contacts between acontact device of a body with a contact device of a mobile phone causethe sudden change in voltage between them since they are operated in acontact mode, which leads to poor electrical contact between the contactdevices and low stability of the power supply devices. In particular,they are problematic in that a lot of moisture and dusts furtheraggravate the electrical contact, which leads to the mishaps to themobile phone and the power supply devices.

DISCLOSURE Technical Problem

Accordingly, the present invention is designed to solve the problems ofthe prior art, and therefore it is an object of the present invention toprovide a non-contact charger capable of wireless data communication andpower transmission and a mobile device using the same, wherein thenon-contact charger enables wireless data communications and wirelesscharging between mobile devices (mobile phones, PDA, MP3 players, DAB orDMB devices, PMP, or Handheld devices, etc) and a personal computer (PC)through the non-contact power transmission using an inducedelectromotive force in which an output power of a USB port is used as aninput device in TC, TA or PC.

Also, it is an object of the present invention to provide a non-contactcharger capable of wireless data communication and power transmissionand a mobile device using the same, wherein the non-contact charger hasa foreign substance detection function to detect and remove foreignmetal substance rather than a battery pack (a pack having asecondary-side wireless charger module installed inside) of a mobiledevice to be charged when the foreign metal substance are placed on themobile device; an identification function to sense the battery pack ofthe mobile device and sense a charging level of the battery pack; andoverload and temperature protection functions.

In order to accomplish the above object, one embodiment of the presentinvention provides a non-contact charger capable of wireless datacommunication and power transmission including a USB connector 10provided in one side of an enclosed device body 2 toattachably/detachably couple with a USB port of a computer or a notebookcomputer using a jack; a USB driver block 20 coupled to the USBconnector 10 and emulated with a USB protocol to receive and transmitdata from/to the computer or the notebook computer; an MPU block 30coupled to the USB connector 10 to control a serial resonator converter50, a current sensing block 60 and a power supply member, each forreceiving a power source from the computer or the notebook computer andsupplying the received power source to a mobile device, or receiving andtransmitting data from/to the computer or the notebook computer; and aprimary coil 70 formed on the device body 2 to generate an inducedelectromotive force so as to wirelessly transmit a data signal and apower signal from the serial resonator converter 50 to the mobiledevice, wherein the serial resonator converter 50 converts the datasignal received/transmitted between the USB driver block 20 and themobile device and the power signal supplied from the USB connector 10 tothe mobile device, and sums up the converted data and power signals, andthe current sensing block 60 analyze a signal of the secondary coil 80to recognize the mobile device, monitors the primary coil 70 and thesecondary coil 80 to control a charge voltage to a stable voltage, andtransmits a signal of the MPU block 30, the signal of the secondary coil80 being transmitted from the primary coil 70 that senses a loadregulation signal by means of the secondary coil 80 corresponding to theprimary coil 70 and arranged in the mobile device.

Accordingly, the primary coil 70 may be composed of any one of FPCB,PCB, coil and ferrite core in a detachable transformer and formed in acircular, tetragonal or polygonal shape, and the serial resonatorconverter 50 may be a LLC full-bridge serial resonator converter whichis a serial & parallel resonator converter in half wave type or fullwave type, and the non-contact charger capable of wireless datacommunication and power transmission according to the present inventionmay further include a gate drive block 40 provided between the USBdriver block 20 and the serial resonator converter 50, and the MPU block30 and the serial resonator converter 50 and having a bootstrap gatedriver; and a display unit 3 for receiving a signal from the primarycoil 70 to display a charging level of a rechargeable battery 230through the control of the MPU block 30, the primary coil 70 sensing asignal of the charging level of the rechargeable battery 230 from thesignal of the secondary coil 80.

Also, the non-contact charger capable of wireless data communication andpower transmission according to the present invention may furtherinclude a thermal protection safety block 92 for sensing an internaltemperature of the device body 2, determining a temperature of theprimary coil 70 and transmitting a signal to the MPU block 30 for thepurpose of the circuit cutoff; a bimetal 71 coupled in series to theprimary coil 70 to intercept a current flow when a current excessivelyflows in the primary coil 70 or the internal temperature is increasedexcessively; a dust & smell sensor circuit 90 for sensing dusts andsmells inside the device body 2; and an ionizer high voltage drivecircuit control block 91 for generating anions and spraying anantimicrobial spray for the bacterial eradication, the current sensingblock 60 further may have a foreign substance detection function that isto give an ID to continuously transmit a data signal and a power signalif constant intervals of a PWM pulse are generated in the primary coil70 and the detected signal from the secondary coil 80 which is inresponse of the constant intervals of the PWM pulse is detected as anormal signal, or to sense the detected signal as the foreign substanceto suspend the transmission of the data signal and the power signal ifthere is no response or the detected response signal is not a normalsignal, and the USB driver block 20 may further include an IrDA signalconverter 21 for converting a data signal into USB protocol and IrDA; anIrDA port 22 for transmitting/receiving the data signal, converted tothe IrDA by the IrDA signal converter 21, to/from the mobile devicethrough the control of the MPU block 30; and a mobile device ID detectorfor sensing and identifying a unique ID of the mobile device.

Also, another embodiment of the present invention provides a chargingbattery-pack including a charger body 201 capable of being in contactwith one side of the charge body 2 of the non-contact charger 1 asdefined in any of claims 1 to 6, transmitting/receiving a data signal bymeans of a magnetic field in no contact with the primary coil 70 andhaving the secondary coil 80 provided in one side thereof and receivinga power signal; a charger controller 210 coupled to the secondary coil80 arranged in one inner side of the charger body 201 to process a powersignal transmitted from the primary coil 70 and transmit the processpower signal to rechargeable battery 230 and to process a data signaltransmitted/received to/from the primary coil 70; and a chargemanagement block 220 for transmitting a charging power to therechargeable battery 230 through the control of the charger controller210, wherein the charge management block 220 supplies a power source ofthe rechargeable battery 230 to the mobile device.

Accordingly, the charger controller 210 may includes a unique ID unitfor transmitting a unique ID to the non-contact charger 1 through thesecondary coil 80 and the primary coil 70 if the initial connection issensed from the non-contact charger 1; and a charge detector circuit forsensing a charging level of the rechargeable battery 230 to transmit apower source to the non-contact charger 1, and the charger body 201 maybe composed of separated packs formed separately toattachably/detachably couple with the mobile device, or composed ofintegrated packs formed integrally to be arranged inside a body case ofthe mobile device, and the secondary coil 80 may be composed of any oneof FPCB, PCB, coil and ferrite core of a detachable transformer, andformed in a circular, tetragonal or polygonal shape.

In addition, the charger body 201 may includes a battery cell 512 forcharging a power through a wireless power receiver circuit 513, thepower being induced from a secondary coil 516 wound into a chargereceiver module 517; shield plates 515, 515-1, 515-2, 515-3, 515-4surrounding a bottom surface and four front, rear, left and rightsurfaces of the battery cell 512 and composed of Al, Cu, or Ni alloymetals to protect the battery cell 512 form a magnetic field; a magneticplate 503 provided between the shield plate 515 and the charge receivermodule 517 and composed of ferrites, Mn—Zn (50 parts by weight:50 partsby weight), Ni—Fe (80 parts by weight:20 parts by weight), or finemetals (Fe—Si—Cu—Nb) to easily induce the induced magnetic field into asecondary coil 516; an insulating board 502 composed of meshes andinsulators to prevent the heat of the shield plate 515 from beingconducted into the battery cell 512, the meshes being made of NI—Cuprovided between the shield plate 515 and the battery cell 512 and theinsulators being able to release the heat and reduce heat conduction; ashield member 501 surrounding the wireless power receiver circuit 513and composed of Al, Cu, or Ni alloy metals to shield a magnetic fieldagainst the wireless power receiver circuit 513.

And, the mobile device using the non-contact charger according to stillanother embodiment of the present invention is configured so that it canreceive a power source from the non-contact charger 1 as defined inclaim 7 and transmit/receive a data.

Also, the mobile device may have a charging battery-pack 200 arrangedinside of it and include an IrDA port for communicating a data with anIrDA controller 302 and an IrDA port 22 of the non-contact charger 1,wherein the charging battery-pack 200 comprises the charger body 201 ofthe integrated pack as defined in claim 9.

In addition, the mobile device may includes a power reception deviceblock 310 electrically contacted with the device block 240 of thecharging battery-pack 200 as defined in claim 8 to receive a powersource; a DC/DC converter 320 coupled to the power reception deviceblock 310 to convert an electric power; and a charge block 330 forcharging the electric power converted in the DC/DC converter 320.

Advantageous Effects

As described above, the non-contact charger capable of wireless datacommunication and power transmission according to the present invention,and the mobile device using the same may be useful to supply an electricpower while stably transmitting/receiving a data without any of errorsin the transmission since the wireless data communication and thewireless charging between mobile devices (mobile phones, PDA, MP3players, DAB or DMB devices, portable music players (PMPs), handhelddevices, etc.) and personal computers (PCs) may be performed at the sametime through the non-contact power transmission using an inducedelectromotive force in which an output power of a USB port is used as aninput device in TC, TA or PC.

Also, the non-contact charger according to the present invention may beuseful to prevent the damage of the mobile devices and maintain theoptimum charging efficiency of the battery pack since the non-contactcharger has a foreign substance detection function to detect and removeforeign metal substance rather than a battery pack (a pack having asecondary-side wireless charger module installed inside) of a mobiledevice to be charged when the foreign metal substance are placed on themobile device; an identification function to recognize the battery packof the mobile device and recognize a charging level of the battery pack;and overload and temperature protection functions.

DESCRIPTION OF DRAWINGS

These and other features, aspects, and advantages of preferredembodiments of the present invention will be more fully described in thefollowing detailed description, taken accompanying drawings. In thedrawings:

FIG. 1 is a circuit view showing a non-contact charger according to thepresent invention;

FIG. 2 is a perspective view showing one embodiment to which IrDAcommunication in the non-contact charger according to the presentinvention is applicable;

FIG. 3 is a circuit view showing another embodiment to which IrDAcommunication in the non-contact charger according to the presentinvention is applicable;

FIG. 4 is an exemplary view showing one embodiment that a charger usinga 24-PIN connector, an adapter and a USB port are used as an inputdevice in the non-contact charger according to the present invention;

FIG. 5 is a circuit view showing a charging battery-pack according tothe present invention;

FIG. 6 is a circuit view showing another embodiment of the chargingbattery-pack according to the present invention;

FIG. 7 is an exploded perspective view showing the first embodiment ofthe charging battery-pack according to the present invention;

FIG. 8 is an exploded perspective view showing the second embodiment ofthe charging battery-pack according to the present invention;

FIG. 9 is an exploded perspective view showing the third embodiment ofthe charging battery-pack according to the present invention;

FIG. 10 is an exploded perspective view showing a battery-pack having awireless power wireless power receiver module among the chargingbattery-pack according to the present invention; and

FIG. 11 is a use view showing a charging device for a conventionalmobile phone.

BEST MODE

Hereinafter, preferred embodiment of the present invention will bedescribed in detail referring to the accompanying drawings.

That is to say, the non-contact charger 1 according to the presentinvention includes a USB connector provided in one side of an encloseddevice body 2 to attachably/detachably couple with a USB port of acomputer or notebook computer 100 using a jack; a USB driver block 20coupled to the USB connector 10 and emulated with a USB protocol toreceive and transmit data from/to the computer or notebook computer 100;an MPU block 30 coupled to the USB connector 10 to control a serialresonator converter 50, a current sensing block 60 and a power supplymember, each for receiving a power source from the computer or notebookcomputer 100 and supplying the received power source to a mobile device300, or receiving and transmitting data from/to the computer or notebookcomputer 100; a primary coil 70 formed on the device body 2 to generatean induced electromotive force so as to wirelessly transmit a datasignal and a power signal from the serial resonator converter 50 to themobile device 300; and the like, as shown in FIG. 1 to FIG. 10.

Accordingly, the serial resonator converter 50 is such configured thatit can convert the data signal received/transmitted between the USBdriver block 20 and the mobile device 300 and the power signal suppliedfrom the USB connector 10 to the mobile device 300, and sum up theconverted data and power signals. And, the current sensing block 60 issuch configured that it can analyze a signal of the secondary coil 80 torecognize the mobile device 300, monitor the primary coil 70 and thesecondary coil 80 to control a charge voltage to a stable voltage, andtransmit a signal of the MPU block 30, wherein the signal of thesecondary coil 80 is transmitted from the primary coil 70 that senses aload regulation signal by means of the secondary coil 80 correspondingto the primary coil 70 and arranged in the mobile device 300.

And, the primary coil 70 is preferably composed of any one of FPCB, PCB,coil and ferrite core in a detachable transformer. For this purpose, theserial resonator converter 50 may be preferably configured as a resonantconverter for conventional transformers, in particular configured forthe purpose of the stable power transmission so that it can beconfigured as a LLC full-bridge serial resonator converter which is aserial & parallel resonator converter in half wave type or full wavetype.

Also, the non-contact charger according to the present invention furtherincludes a gate drive block 40 provided between the USB driver block 20and the serial resonator converter 50, and the MPU block 30 and theserial resonator converter 50 and having a bootstrap gate driver; and adisplay unit 3 for receiving a signal from the primary coil 70 todisplay a charging level of a rechargeable battery 230 through thecontrol of the MPU block 30, the primary coil 70 sensing a signal of thecharging level of the rechargeable battery 230 from the signal of thesecondary coil 80.

In addition, the non-contact charger according to the present inventionmay further include a thermal protection safety block 92 for sensing aninternal temperature of the device body 2, determining a temperature ofthe primary coil 70 and transmitting a signal to the MPU block 30 forthe purpose of the circuit cutoff according to the heating in themeasured temperature of the primary coil 70 and its high-temperaturestate; a bimetal 71 coupled in series to the primary coil 70 tointercept a current flow when a current excessively flows in the primarycoil 70 or the internal temperature is increased excessively; a dust &smell sensor circuit 90 for sensing dusts and smells inside the devicebody 2; and an ionizer high voltage drive circuit control block 91 forgenerating anions and spraying an antimicrobial spray for the bacterialeradication, as shown in FIG. 1 and FIG. 3. Also, the thermal protectionsafety block 92 with a temperature sensor for the overheat protection,the bimetal 71, the dust & smell sensor circuit 90, the ionizer highvoltage drive circuit control block 91, and the like are preferablysuitably configured in the charging battery-pack 200 and the mobiledevice 300 that are coupled to the non-contact charger 1 and operated.

The configuration and operation of the non-contact charger 1 accordingto the present invention will be described in detail, as follows. Thatis to say, the non-contact charger 1 according to the present inventionis such configured that it can transmit a data between the non-contactcharger 1 and the mobile device 300 and transmit a charging power at thesame time using a core-to-core communication mode, the mobile device 300having the charging battery-pack 200 or the charging battery-pack 200arranged inside of it.

Such a non-contact charger 1 has a communication means for communicatingwith the computer or notebook computer 100 which can monitor and controlstates of inner systems of the mobile device 300, the chargingbattery-pack 200 and the non-contact charger 1. Therefore, as oneexample, it is shown that the computer or notebook computer 100 and thenon-contact charger 1 are communicated to each other by means of the USBcommunication. This is why the USB communication in addition to the datacommunication makes it possible to supply the charging power to one lineat the same time. However, the data communication between thenon-contact charger 1 and the computer or notebook computer 100 ispossible in a plurality of data transmission modes such as RS-232c, SISCand serial, parallel transmission modes etc. In this case, thenon-contact charger 1 may be supplied with an electric power inconventional separate manners That is to say, the non-contact charger 1may be communicated with the computer or notebook computer 100, andsimultaneously supplied with a charging power of the mobile device 300which is one of the peripherals, and also supplied with an electricpower in conventional separate manners, which makes it possible to allowthe charging and the data communication between the non-contact charger1 and the mobile device 300 at the same time.

That is to say, the preferred exemplary embodiment of the presentinvention is a mode of the USB communication between the computer ornotebook computer 100 and the non-contact charger 1, and such a USBcommunication line is ruled so that, among four devices, two devicessupply a power source and the other two devices transmit a data.Accordingly, the power source may be supplied to the non-contact charger1 and the data may be transmitted/received in the USB communicationmode. In such a USB communication mode, a host controller is installedinside the computer or notebook computer 100, and therefore the devicesconnected by means of the lines may be controlled by the hostcontroller. And, a USB driver block 20 of the non-contact charger 1corresponding to the host controller has a controller for a USB of thenon-contact charger 1 installed inside, and the USB driver block 20converts these information in the USB mode and transmits/receives theconverted information to/from the computer or notebook computer 100according to the conditions of the non-contact charger 1, or if the itis coupled to the charging battery-pack 200 or the mobile device 300which is coupled to the non-contact charger 1.

Also, communicating in this USB communication mode istransmitting/receiving the modulated information in the primary coil 70and the secondary coil 80. And, a controller for the USB communicationmay also be installed inside the charging battery-pack 200, and acontroller for the USB communication may also be installed inside themobile device 300. Therefore, the controllers communicate with thecomputer or notebook computer 100 in the USB communication using thenon-contact charger 1 as a hub since these communication signals arepossibly transmitted through the USB driver block 20 of the non-contactcharger 1.

Accordingly, the non-contact charger 1 that communicate a data with themobile device 300 using the core-to-core communication mode andtransmits an electric power includes a USB connector 10 for couplingwith a USB port of a computer and notebook computer 100; a USB driverblock (USB emulation control block) 20 coupled to the computer andnotebook computer 100 and the USB connector 10 to receive music, movingpictures, data from the computer or notebook computer 100 and emulatethem with a USB protocol; an MPU block 30 for controlling internalelements of the non-contact charger (wireless charger) 1; a gate driveblock including a bootstrap gate driver; a serial resonator converter 50which is an LLC full-bridge serial resonator converter; a primary coil70 used as a detachable transformer composed of FPCB, PCB, coil andferrite core and synthesizing a signal through the control of the MPUblock 30 and wirelessly transmitting the synthesized signal to thesecondary coil 80 of the battery-pack installed inside the mobile device300; a bimetal 71 coupled in series to a C-L resonator when allfunctions of the chips are shut down and detachably inserted to ensureits safety when the core (a primary coil 70) are overheated; a dust &smell sensor circuit 90 for sensing dusts and smells on the non-contactcharger 1; an ionizer high voltage drive circuit control block 91 forspraying an antimicrobial spray for the partial anion generation or thebacterial eradication; a current sensing block 60 for stably controllingan electric power through a current feedback using an automaticvariation algorithm of primary frequency so as to recognize ID of thecharging battery-pack 200 in the MPU block 30 of the charging module inthe primary coil 70 through the load regulation in the mobile devicehaving a wireless charging module installed inside of it, the wirelesscharging module being coupled to the secondary coil 80 and arranged inthe charging battery-pack 200, and to control a voltage of a secondaryrectification terminal in the charging battery-pack 200; a thermalprotection safety block 92 for sensing a temperature of the chargingchips; and a signal detection block 61 coupled to the primary coil 70 todetect a secondary signal, the primary coil 70 sensing a feedback signalout of the secondary signal in the charging battery-pack 200.

As a result, the mobile device 300 may use the above-mentionednon-contact charger 1 as a hub of the USB communication to receivemusic, moving pictures, data, etc. from the computer (PC) or notebookcomputer 100, and further control the mobile device 300 in the computeror notebook computer 100. For this purpose, the USB driver block 20coupled to the USB connector 10 emulates the transmitted/received datawith a USB protocol, and wirelessly transmits a signal to the mobiledevice 300 or the charging battery-pack 200 by synthesizing a signal inthe primary coil (a detachable transformer: a transformer composed ofFPCB, PCB, Coil and Ferrite core) 70 through the USB driver block 20 andthe MPU block 3 and converting the synthesized signal. Therefore, likethe primary coil 70, the USB driver block 20 receives a data signaltransmitted from the secondary coil (a detachable transformer: atransformer composed of FPCB, PCB, Coil and Ferrite core) 80 of thecharging battery-pack 200 to separate a signal through the frequencyshift keying (FSK), and stores the data in a storage medium (memory) ofthe mobile device 300. Therefore the USB driver block 20 may store datausing the USB controller 301 since it includes the USB controller 301.

In addition, if the charging battery-pack 200 or the mobile device 300,each having a secondary wireless charging module installed inside,approaches the non-contact charger 1 when the non-contact charger 1 isstill in operation, then they may be automatically synchronized in thecomputer or notebook computer 100 to be automatically contacted by meansof the USB communication, and the storage medium folders are popped upin the mobile device 300 to wirelessly upload and download music (MP3format), moving pictures (avi, asf, dat format), data, etc. to/from thecomputer or notebook computer 100.

That is to say, the non-contact charger 1 coupled to the computer ornotebook computer 100 senses the contact of the charging battery-pack200 by allowing the primary coil 70 to transfer a pulse in constantintervals. Then, the wireless data communication possible between theprimary coil 70 of the non-contact charger 1 and the secondary coil 80of the charging battery-pack 200. Separately, the non-contact charger 1may supply an electric power of the USB port in the computer or notebookcomputer 100, or separate supply powers to the charging battery-pack200. The configurations of the non-contact charger 1 and the batterypack 200, and the mobile device and the like will be carried out using alarge number of techniques filed by the inventors. In addition to thecharging and data communication mode by the above-mentioned non-contactcharger 1 and battery pack 200, the non-contact charger 1 and thebattery pack 200, and the mobile device and the like are provided in thepresent invention so that an electric power can be supplied to them andthe data can communicate between them, thereby to facilitate the datatransmission/reception to/from a controller of a main computer ornotebook computer, and the state monitoring, etc.

And, if the current sensing block 60 receives a signal which is provennot to have a memory in which the signal from the secondary coil 80 canreceive the mobile device 300 and music (MP3 format), moving pictures(avi, asf, dat formats), data, etc, then the USB driver block (USBemulation control block) 20 further includes a USB data transmissioncontrol module 25 not to transmit the USB data (music (MP3 format),moving pictures (avi, asf, dat format), data, etc.) through the controlof the MPU block 30, and the mobile device may thus transmit data againif the mobile device is proven to be in contact. Then, the primary coil70 and the secondary coil 80 transfer only an electric power and a datarequired for the power transfer, and also transmits suitable signals forthem to the computer or notebook computer.

Then, a unique ID is generated in the charging battery-pack 200 or themobile device 300 in response to the pulse signal of the non-contactcharger 1 and transmitted to the non-contact charger 1 via the serialresonator converter 50, the primary coil 70 and the secondary coil 80through the control of the MPU block 30 of the non-contact charger 1.That is to say, if a unique ID signal is transmitted through thesecondary coil 80 from ID chips in the charger controller 210 of thecharging battery-pack 200, the ID chips having a secondary wirelesscharging module installed inside, then the unique ID of the chargingbattery-pack 200 or the mobile device 300 is recognized by a loadregulation signal of the supplied power signal in the primary coil 70,the signal detection block 61, the current sensing block 60. If theunique ID of the charging battery-pack 200 or the mobile device 300 isrecognized as described above, then information about the chargingbattery-pack 200 or the mobile device 300 is transmitted to the computeror notebook computer 100. That is to say, if the non-contact chargingbattery-pack 200 is put on the non-contact charger 1, the ID chipsinstalled inside the charging battery-pack 200 operate and regulate aload under a non-load state to transmit a charge start ID to thenon-contact charger 1, and the non-contact charger 1 feedbacks thesignal to confirm that the ID accords as a right signal, and supplies anelectric power to the charging battery-pack 200 in a full power mode ifthe ID accords as a right signal.

And, if the unique ID of the charging battery-pack 200 or the mobiledevice 300 is recognized, then a voltage of the secondary rectificationterminal in the charging battery-pack 200 or the mobile device 300 iscontrolled to a constant voltage by means of the primary coil 70 and thesecondary coil 80. This may control the secondary charging power of thecharging battery-pack 200 or the mobile device 300 using an automaticvariation algorithm of primary frequency of the non-contact charger 1,minimize a consumed power [Pdis=(Vout−Vbat)*Ichg] by Vdrop in theprimary coil 70, the signal detection block 61 and the current sensingblock 60 of the non-contact charger 1 to reduce separate elements of thesecondary charging module in the charging battery-pack 200 or the mobiledevice 300, and prevent the increase in temperature of other chargingchips. Therefore, it is possible to use linear charging IC without theuse of the complex and expensive switching charging IC, and to ensure aninner space of the battery-pack.

Next, different kinds of metal bodies without any of charging modulesare heated by the heat which is generated due to the loss by an eddycurrent by an induced electromotive force when the metal bodies are puton the non-contact charger 1, which leads to the damage in thenon-contact charger 1. This phenomenon is one of the problems that havethe most serious effect on the stability of the non-contact charger 1using the induced electromotive force. Therefore, the mobile devicesshould have a safety device to recognize different kinds of metalbodies, such as coins, metal pens, scissors, etc., without any ofcharging modules and to shut down an electric power to prevent theiroverheat.

As configured above, a means for transmitting an electric power from theprimary coil 70 to the secondary coil 80 is to use a half wave or fullwave type serial & parallel resonator converter to induce LC resonance,thereby to make an electric current into a sine wave and transmit anelectric power to the secondary side by means of the inductive coupling.At this time, the switching frequency is set to a higher level than theresonant frequency to be soft-switched. There is a mechanism for sensingand determining whether different kinds of foreign substance is put onthe non-contact charger 1 by applying a PWM pulse at constant intervalsin the primary coil 70 for a very short time. The switching frequencyand the phase of current is always formed at an angle of 90 degree underan unloading condition. At this time, the phase of current is changedwith the change in self inductance if foreign substance approaches theprimary coil 70, and a level of the foreign substance is recognizedaccording to the level of phase difference. That is to say, if anapproaching matter is sensed, an ID check signal is transferred during aconstant period that an electric power is applied. At this time, theapproaching matter is recognized as foreign substance if a feedbackunique ID signal is not sensed or different ID is sensed, and then acharging system of the non-contact charger 1 is shut down not to supplya charging power to the primary coil 70, thereby to ensure the stabilityof the charge management block in the charging battery-pack 200 or themobile device 300.

That is to say, the current sensing block 60 of the non-contact charger1 generates constant intervals of a PWM pulse in the primary coil 70,and then the current sensing block 60 further has a foreign substancedetection function that is to give an ID to continuously transmit a datasignal and a power signal if constant intervals of a PWM pulse aregenerated in the primary coil 70 and the detected signal from thesecondary coil 80 which is in response of the constant intervals of thePWM pulse is detected as a normal signal, and to sense the detectedsignal as the foreign substance to suspend the transmission of the datasignal and the power signal if there is no response or the detectedresponse signal is not a normal signal.

Also, complicated techniques are required for this foreign substancedetection function to sense the foreign substance during the charging,wherein an electric power gradually falls down with the charging.Hysteresis is put on this power curve, and a matter is recognized asforeign substance if a signal of the matter goes beyond a hysteresisperiod when the matter is put on the current sensing block 60, therebyto use an algorithm to shut down the current sensing block 60.

The present invention may provide a wireless charging solution with thesafety and the battery monitoring function of the charging battery-pack200 in the non-contact charger 1, wherein a safety device and wirelesscharging modules are installed inside the charging battery-pack 200.

In addition, the non-contact charger 1 basically detect temperature ofthe primary coil 70 and various component chips using the thermalprotection safety block 92, or monitors inner temperature of the devicebody 2 to prevent an overcurrent flow since the non-contact charger haschips having a shut-down function at a constant temperature over 45° C.and a protection function against the overcurrent and overvoltage, andalso prevent an overcurrent flow since the non-contact charger 1 has afuse installed inside. And, a circuit is intercepted if the functions ofthe component chips in the non-contact charger 1 is paralyzed anderroneous signals are detected, and then the non-contact charger 1organizes safety devices, for example to intercept a circuit when theprimary coil 70 is overheated, by forming bimetals 71 in series in a C-Lresonator coupled to the primary coil 70.

And, the non-contact charger 1 additionally functions to spray anantimicrobial spray for the anion generation or the bacterialeradication, and display a charging level of the LCD display unit 3 orthe computer and notebook computer 100, etc. In addition, if therechargeable battery 230 is fully charged, then the rechargeable battery230 receives a full charging signal, outputted from the charging IC,from ID chips and transmits the full charging state to the non-contactcharger 1 through the control of the charger controller 210 by means ofthe load regulation, and then feedback this signal to display in adisplay unit 3, the computer or notebook computer 100 and the like thatthe charging battery-pack 200 is completely charged.

This non-contact charger 1 of the present invention may be charged withan electric power from the computer or notebook computer 100 using a USBport as described above and shown in FIG. 4, and also additionallyconfigured to be charged in other manners under the circumstances thatit is not connected with the computer or notebook computer, that is,that users are on their travels. That is to say, a 24-PIN connectorusing a charger, an adapter, a USB port, and the like may as an inputdevice may be employed. As one example, if a portable charger isconnected using a 24-PIN standard connector, then the portable chargeris always supplied with a voltage of 4.2 V through pins 21 and 22 bymeans of certain ID resistance assigned to a pin 1, and if an adapter isconnected, then the adapter may be supplied with an electric powerthrough pins 4 and 5, and if a USB port is connected, then the USB portmay be supplied with an electric power through a pin 16, and thereforethe non-contact charger 1 may operate at an input power of 4 to 5.5 V.

And, the adapter using the 24-PIN standard connector may be used tocharge two mobile devices at the same time by constituting a dockingstation to connect two non-contact chargers to each other, wherein thedocking station may charge two mobile devices at the same time.

The non-contact charger 1 of another embodiment of the present inventionas configured thus will be described in detail, as follows.

That is to say, the USB driver block 20 that communicate with thecomputer or notebook computer 100 using a USB port additionally has afunction as a controller for the USB, as well as a function to convert adata signal into an IrDA signal.

Accordingly, this USB driver block 20 further includes an IrDA signalconverter 21 for converting a data signal into a USB protocol and anIrDA, and also it further includes an IrDA port 22 fortransmitting/receiving a data signal to/from the mobile device 300through the control of the MPU block 30, wherein the data signal isconverted into IrDA by the IrDA signal converter 21. Also, it furtherincludes a mobile device ID detector (not shown) for sensing andidentifying a unique ID of the mobile device 300 that is transmittedfrom the IrDA controller block 302 of the mobile device 300 and receivedin the IrDA port 22.

Accordingly, FIG. 2 and FIG. 3 are diagrams showing a non-contactcharger 1 having an IrDA transceiver module installed inside accordingto the present invention.

Referring to FIG. 2 and FIG. 3, if the non-contact charger 1 isconnected to a USB port of the computer or notebook computer 100 for thepower input, the non-contact charger 1 converts data, such as USBcommunication protocol and IrDA, to each other using an IrDA signalconverter 21 installed inside the non-contact charger 1, and engagesmusic, moving pictures, data and the like, which are stored from the PCor notebook computer, through an IrDA transceiver to wirelessly exchangethe data with the mobile device 300 (mobile phones, PDA, PMP, DMBdevices, MP3, etc.). Of course, a battery is charged with an electricpower for power supply by transmitting energy to the mobile device 300by means of the primary coil 70 and the secondary coil 80 by employing anon-contact detachable transformer.

If the IrDA port 22 installed inside the non-contact charger 1 and theIrDA port of the mobile device 300 are matched with each other to allowthe mobile device 300, with a secondary wireless charging moduleinstalled inside, to approach the non-contact charger 1, then thenon-contact charger 1 automatically synchronizes with a computer body bymeans of the primary coil 70 and the secondary coil 80, as describedabove. As a result, USB is automatically connected to the computer ornotebook computer 100 so that interactive infrared data communicationcan be made between the non-contact charger 1 and the mobile device 300,and therefore a storage medium folder of the mobile device 300 may bepopped up, the data such as music (MP3 format), moving pictures (avi,asf, dat format), and the like may be down-loaded, and other data may beprocessed at the same time.

Accordingly, FIG. 3 shows an infrared data communication system using anIrDA port installed inside between the non-contact charger 1 and themobile device 300, and a configuration of the non-contact charger 1 fortransmitting an electric power.

That is to say, the non-contact charger 1 as shown in FIG. 3 includes aUSB connector 10; a USB driver block 20 having an IrDA signal converter21 for converting a signal into a USB-to-IrDA; an MPU block 30; a gatedrive block 40 including a bootstrap gate driver; a serial resonatorconverter 50 of an LLC full-bridge serial resonator converter; a primarycoil 70; a secondary coil 80; a bimetal 71; an dust & smell sensorcircuit 90; an ionizer high voltage drive circuit control block 91; acurrent sensing block 60; a thermal protection safety block 92; and asignal detection block 61 for detecting a secondary signal.

And, the mobile device 300 includes an IrDA controller 302 and IrDAport, and the like. Accordingly, the data communication is possiblebetween the mobile device 300 and the non-contact charger 1 using eachof their IrDA ports.

The mobile device 300 includes a charging battery-pack 200 coupled tothe non-contact charger 1 of the present invention as configured thus totransmit/receive data to/from the non-contact charger 1 and wirelesslysupplied with an electric power for power supply.

That is to say, the mobile device 300 may be coupled to one side of thecharge body 2 of the non-contact charger 1, and it includes a chargerbody 201 transmitting/receiving a data signal by means of a magneticfield in no contact with the primary coil 70 and having the secondarycoil 80 provided in one side thereof and receiving a power signal; acharger controller 210 coupled to the secondary coil 80 in an one innerside of the charger body 201 to process a power signal transmitted fromthe primary coil 70 and transmit the processed power signal to therechargeable battery 230 and processing a data signaltransmitted/received to/from the primary coil 70; and a chargemanagement block 220 for transmitting a charging electric power to therechargeable battery 230 through the control of the charger controller210, wherein the charge management block 220 supplies an electric powerof the rechargeable battery 230 to the mobile device 300.

Accordingly, the mobile device 300 includes a unique ID unit (a uniqueID chip) for transmitting a unique ID to the non-contact charger 1through the secondary coil and the primary coil 70 if the chargercontroller 210 senses the initial connection from the non-contactcharger 1; and a charge detector circuit for sensing a charging level ofthe rechargeable battery 230 to transmit a data signal to thenon-contact charger 1.

And, the charger body 201 may be composed of separated packs separatelyformed to be detachable and attachable from/to the mobile device 300.Also, the charger body 201 may be composed of integrated packs arrangedinside a body case of the mobile device 300 to be formed integrally.

Then, the charger body 201 composed of the separated packs furtherincludes a device block 240 for supplying a power source of therechargeable battery 230 to the mobile device 300 through the control ofthe charger controller 210.

A configuration of the charger body 201 will be described in detail withreference to FIG. 1 and FIG. 3, as follows. First, the secondary coil 80of the charging battery-pack 200 is coupled to a full-bridgerectification block 81 of the mobile device. And, the charger controller210 coupled to the rectification block 81 may transmit a unique ID ofthe mobile device 300 or the charging battery-pack (a wirelesscharge-enabled battery pack) 200, sense foreign substance, turn on/off acharging feedback charge circuit, and transmit a charging level to thenon-contact charger 1, and it has a signal-to-USB conversion function.And, the charger body 201 may includes a charge management block 220 forcharging, a fuel gauge control block 221, a protection control block222, a PTC and rechargeable battery 230, and a USB controller 301 or anIrDA controller block 302 installed inside the mobile device 300, andthe like together.

And, the charging battery-pack 200 is provided with a plurality ofsafety devices, as in the safety devices of the above-mentionednon-contact charge management block 1.

That is to say, the safety devices of the charging battery-pack 200feedbacks the distributed voltage because NTC coupled to the outside ofthe safety devices changes a resistance value according to the change intemperature the presence of a temperature sensor installed inside thecharge management block, and therefore the safety devices may functionto intercept the charging if the temperature exceeds the previously settemperature. Also, the safety devices of the charging battery-pack 200protect a battery from overcurrent, overvoltage, overdishcarge, shortcircuit, etc. using the protection block, so called PCM, and alsoprotect the charging battery-pack 200 the rechargeable battery 230, andtheir circuits since they are shut down by the overcurrent andtemperature using PTC or bimetal. And, the safety devices of thecharging battery-pack 200 may include a mechanism that transmits anerroneous signal to the non-contact charger 1 through the loadregulation if an erroneous operation in the safety devices is caused forID chips installed in the charging battery-pack 200 and other many chipsduring the charging, and then receives a signal from the non-contactcharger 1 through FSK and switches the non-contact charger 1 off tosuspend a power supply.

And, this charging battery-pack 200 is integrally formed along with themobile device 300 since it is arranged inside the mobile device 300, asshown in FIG. 5 to FIG. 9, or may be separately formed to facilitate itsdetachment and attachment. Accordingly, the mobile device 300 mayinclude a power reception device block 310 electrically contacted withthe device block 240 of the charging battery-pack 200 to receive anelectric power; a DC/DC converter 320 coupled to the power receptiondevice block 310 to convert an electric power; and a charge block 330for charging the electric power converted in the DC/DC converter 320.

In general, the above-mentioned non-contact transformer according to thepresent invention has disadvantages that it has a relatively lower selfinductance than the conventional transformers since it has large poresunlike the conventional transformers, and that a circulating currentflows according to the change in load if the conventional serialresonant converter is used in the non-contact transformer since it has arelatively larger leakage inductance. In addition, the non-contacttransformer according to the present invention has a problem that aswitching loss may be caused by the continuous current flow in secondaryrectifier diodes, depending on the reverse recovery characteristics ofthe diodes. However, in order to solve the problems, the non-contacttransformer according to the present invention has advantages that itscirculating current flow may be significantly lower than if theconventional serial resonant converter is used in the non-contacttransformer since a LLC full-bridge serial resonator converter 50 for anon-contact transformer may operate at a lower switching frequency thana resonance frequency, and that a switching loss of the diodes may bereduced since a discontinuous current flows in the secondary rectifierdiodes.

Also, the primary coil 70 and the secondary coil 80 are composed of anyone of FPCB, PCB, coil and ferrite core of the detachable transformer,and formed in a flat or cylindrical shape of a circle, tetragon orpolygon to facilitate the signal transmission.

The preferred production embodiment of the non-contact chargingbattery-pack 200 according to the present invention will be describedwith reference to FIG. 5 to FIG. 9, as follows. That is to say, FIG. 5is a diagram showing a charging battery-pack 200 composed of all-in-onehard packs, and FIG. 6 is a circuit view showing one preferredembodiment of a charging battery-pack installed inside the mobile device300.

That is to say, the charging battery-pack 200 composed of the all-in-onehard packs includes a secondary coil and a magnetic field shield, arectification block, a charge management block (a switching or linearcharging circuit), a wireless communication ID detection block, aprotection block, and a battery. That is to say, the chargingbattery-pack 200 is composed of a secondary coil (including a coil orcore) 80; a rectification block 81; a charger controller 210 which is anadapter control block having a port installed inside, the port beingable to enable or disable LDO+ID (TX, RX communication)+an FET drive+abattery charging input (Empty, Full signal) function+an oscillator+acharge management block; a protection control module (PCM) 222; a PTCand a rechargeable battery 230; a charge management block 220; a deviceblock 240 which is a device coupled to a mobile phone, etc.

In the case of the embedded charging battery-pack 200, a case cover ofthe mobile device 300 has a secondary coil a magnetic field shield(using a method for ejection-molding a coil on a cover, or manufacturinga protective case and subjecting the case to an ultrasonic weldingprocess), and produces a device, which can be coupled to the mobiledevice 300, to incorporate a rectification block and a wireless IDdetection block into the embedded block of the mobile device 300 coupledthrough the device, and then the charging battery-pack 200 is chargedwith an electric power through the device coupled of the battery packinstalled inside by employing the DC/DC converter 320 and the chargeblock 330 installed inside the mobile device 300.

Also, still another configuration of the charging battery-pack 200installed inside the mobile device 300 includes a secondary coil and amagnetic field shield; a rectification block; a wireless communicationID detection block; a protection block; a battery, and the like, all ofwhich are installed inside the case cover of the mobile device 300without its being melt-adhered to the case cover, and produces themobile device 300 and a connection device such as a rectification blockoutput, grounding, two battery poles, a charging pin, and then thecharging battery-pack 200 is charged with an electric power through thedevice coupled of the battery by employing the DC/DC converter 320 andthe charge block 330 installed inside the mobile device 300.

Blocks for this embedded charging battery-pack 200, which is anon-contact charging semi-inner pack applicable to the mobile device300, may include a secondary coil (including a coil or core) 80; arectification block 81; a charger controller 210 which is an adaptercontrol block having a port installed inside, the port being able toenable or disable LDO+ID (TX, RX communication)+an FET drive+a batterycharging input (Empty, Full signal) function+an oscillator+a chargemanagement block; a protection control module (PCM) 222; a PTC and arechargeable battery 230; a DC/DC converter 320 installed inside themobile device 300 as a GSM mobile phone; and a charge block 330installed inside the mobile device 300 as a GSM mobile phone, as shownin FIG. 6. At this time, the mobile device 300 as the GSM mobile phonerefers to a mobile device (for example, a GSM mobile phone) having aDC/DC converter 320 and a charge block 330 installed in the device.

As a result, if the mobile device 300 as the GSM mobile phone having anon-contact charging semi-inner pack, that is, a charging battery-pack200 installed inside is mounted on the non-contact charger 1, anelectric power is generated in the non-contact charger 1 and transmittedto the charging battery-pack 200 through the secondary coil 80.

Therefore, a secondary side as the charging battery-pack 200 receives ACcurrent from the secondary coil 80 and rectifies the AC current in therectification block 81 to convert the rectified AC current into DCcurrent, and generates a power save code for reducing an electric powerin the non-contact charger 1 and transfers the generated power save codethrough a TXD pin if its voltage exceeds stable voltage (for example,5.5 V), and then by adjusting a voltage of the secondary side to thestable voltage (for example, 5.5 V) using a parameter (frequency). Thisprocedure is repeated to generate ID for a stable voltage (for example,5 V) if a voltage of the secondary side as the charging battery-pack 200becomes the stable voltage (for example, 5 V) which is an optimumvoltage condition, and to generate an electric power in the non-contactcharger 1 if the ID of the non-contact charger 1 is matched. If the IDof the non-contact charger 1 is not matched, a power supply is shut downand under a sleep mode in the non-contact charger 1, or an error iscaused to shut down a power supply since there in no data receptioninformation for the unique ID when foreign substance is put on thenon-contact charger 1.

FIG. 7 to FIG. 9 show exploded perspective views according to variouspreferred embodiments of the charging battery-pack 200.

First, referring to a configuration of the charging battery-pack 200according to the first embodiment as shown in FIG. 7, the chargingbattery-pack 200 includes an A/S label 411, a top case 412, anon-contact charging PCB board 413, a (−)Ni-plate 414, a PTC or bimetal415, a lead wire 416, a (+)Ni-plate 417, an auxiliary case 418, a Nomaxtape 419, a rectifier board 420, a battery cell 421, a secondary coil422, a bottom case 423, and a label 424. That is to say, this is oneembodiment that the rectifier board 420 is arranged on the top.

Next, FIG. 8 shows an assembly view (top arrangement of a circuit board)of a non-contact charging and internal battery pack according to thesecond embodiment. Here, the non-contact charging and internal batterypack includes an A/S label 431, a top case 432, a non-contact chargingPCB board 433, a (−)Ni-plate 434, a PTC or bimetal 435, a lead wire 436,a (+)Ni-plate 437, an auxiliary case (able to be filled in a hot meltmanner) 438, a Nomax tape 439, a connector board 440, a battery cell441, a secondary coil 442, a bottom case 443, and a label 444.

And, FIG. 9 shows an assembly view (side arrangement of a circuit board)of a non-contact charging and internal battery pack according to thethird embodiment. Here, the non-contact charging and internal batterypack includes an A/S label 451, a top case 452, a non-contact chargingPCB board 453, a (−)Ni-plate 454, a PTC or bimetal 455, a lead wire 456,a (+)Ni-plate 457, an auxiliary case (able to be filled in a hot meltmanner) 458, a Nomax tape 459, a connector board 460, a battery cell461, a secondary coil 462, a bottom case 463, and a label 464.

The battery pack as configured thus has a shield member for shielding amagnetic field having a schematic structure as shown in FIG. 10.Erroneous operations and overheating in the battery cells and thecharging blocks are prevented due to the presence of such a shieldmember. That is to say, the battery cells 421, 441, 461 as shown in FIG.7 to FIG. 9 may be configured as in the configuration of the batterycell 512 having the shield member schematically shown in FIG. 10.

That is to say, FIG. 10 is a block diagram showing a chargingbattery-pack 200 having a wireless power receiver module. Here, thecharging battery-pack 200 composed of coils, fine metals, thin aluminumfilms (foils, etc.), lithium ions or lithium polymers is configured sothat a thin aluminum film can be put into the charging battery-pack 200to completely intercept a magnetic field, and the charging battery-pack200 can be charged/discharged at about 500 cell cycles without adverselyaffecting the cells. Here, the coil includes all shapes of coils. Thatis to say, the coil may be formed in various shapes such as tetragonal,circular or oval shapes, etc. Therefore, the charging battery-pack 200having a wireless power receiver module may include wireless powerreceiver circuits arranged in one side of the battery cell 512 in avertical or horizontal direction; and a shield member 501 for shieldinga magnetic field surrounding the wireless power receiver circuits 513.

And, the charging battery-pack 200 composed of coils, fine metals, thinaluminum films (foil, etc.), lithium ions or lithium polymers includes ashield plate 515 for completely shielding a magnetic field. The shieldmember 501 and the shield plate 515 are formed of thin plates whichcomprises Al, Cu, Ni Alloy metals, etc. Also, the battery cell 512 hasthe same configuration as the shield plate 515. Accordingly, the batterycell 512 includes shield plates 515-1, 515-2, 515-3, 515-4, all of whichare arranged in the front, rear, left and right sides in the center ofthe battery cell 512, and therefore it is configured to protect thebattery cell 512 from the magnetic field. A magnetic plate 503 isprovided between the shield plate 515 and the charge receiver module 517into which the secondary coil 516 is wound, and therefore it has amagnetic body having a high transmissivity so that the magnetic fieldinduced from the primary coil is easily induced into the secondary coil516. This magnetic plate 503 is composed of ferrites, Mn—Zn (50 parts byweight:50 parts by weight), or Ni—Fe (80 parts by weight:20 parts byweight), or manufactured by employing Fe as a main component in finemetals (Fe—Si—Cu—Nb), and adding Si and B, and a trace of Cu and Nb at ahigh temperature and quenching and solidifying the resulting mixturebelow 100° C.

And, an insulating board 502 as an insulator is provided between theshield plate 515 and the battery cell 512, and particularly theinsulating board 502 is composed of meshes composed of NI—Cu; orinsulators capable of emitting the heat and decreasing its heatconduction, thereby to prevent the increase in temperature of thebattery cell 512 and the overheating of the battery cell 512.Accordingly, the charging battery-pack 200 can be charged/discharged atabout 500 cell cycles since it is coupled to the charge receiver module517 so as to prevent the temperature and the magnetic field fromadversely affecting the battery cells 512. At this time, the coils maybe formed in all possible shapes. Reference numeral 511 (not shown)represents a (−) device, and Reference numeral 514 (not shown)represents (+) device, and Reference numeral 516 (not shown) representsa coil.

The non-contact charger 1 according to the preferred embodiment of theabove-mentioned charging battery-pack 200 also has a primary coil 70formed on the top surface of the device body 2 having an enclosed shape,and may constitute the primary coils 70 in the form of coils or coreswhich are formed in spirally circular, tetragonal or polygonal shapes.As described above, if the mobile device 300 having the chargingbattery-pack 200 or the charging battery-pack 200 arranged inside is puton the non-contact charger 1 composed of the primary coils 70, themobile device 300 is configured so that it can supply data fortransceiver and an electric power for power supply to the computer ornotebook computer while it is coupled to the computer or notebookcomputer.

Although exemplary embodiments of the present invention have been shownand described, it would be appreciated by those skilled in the art thatchanges might be made in these embodiments without departing from theprinciples and spirit of the invention, the scope of which is defined inthe claims and their equivalents.

The invention claimed is:
 1. A non-contact charger comprising: aconnector configured to connect to a communication port of a computerand configured to receive a power signal and a data signal from thecomputer when the connector is connected to the communication port; acommunication driver coupled to the connector and configured to generatean input data based on the data signal received from the computer; aconverter configured to convert the input data generated by thecommunication driver to a transmission signal to wirelessly transmit theinput data to a target object; and a primary coil configured to generatean induced electromotive force based on the transmission signal towirelessly transmit the input data to the target object along with aninput power signal for the target object.
 2. The non-contact chargeraccording to claim 1, wherein the input power signal comprises a powersource for the target object.
 3. The non-contact charger according toclaim 1, wherein the connector comprises a USB connector.
 4. Thenon-contact charger according to claim 1, wherein the power signalreceived from the computer comprises a power source for the non-contactcharger.
 5. The non-contact charger according to claim 1, wherein thecommunication driver is configured to convert the data signal receivedfrom the computer to an IrDA signal.
 6. The non-contact chargeraccording to claim 5, further comprising an IrDA port for transmittingthe converted IrDA signal to the target object.
 7. The non-contactcharger according to claim 1, wherein the target object comprises amobile device.
 8. A non-contact charger comprising: a connectorconfigured to connect to a communication port of a computer andconfigured to receive a power signal and a data signal from the computerwhen the connector is connected to the communication port; acommunication driver coupled to the connector and configured to convertthe data signal to an IrDA signal; an IrDA port for wirelesslytransmitting the converted IrDA signal to a target object; and a primarycoil configured to generate an induced electromotive force based on thepower signal and wirelessly transmit the power signal to the targetobject.
 9. The non-contact charger according to claim 8, wherein theconnector comprises a USB connector.
 10. The non-contact chargeraccording to claim 8, wherein the power signal received from thecomputer comprises a power source for the non-contact charger.
 11. Thenon-contact charger according to claim 8, wherein the target objectcomprises a mobile device.
 12. A non-contact charger comprising: aprimary coil configured to generate an electric power signal andtransmit the generated electric power signal to an external unit, theprimary coil being configured to receive an electromotive forcegenerated by the external unit and generate an inductive current inresponse to the electromotive force; and a current sensor configured tomonitor the inductive current generated by the primary coil to obtainidentification information of the external unit, wherein the currentsensor is configured to control the transmission of the generatedelectric power signal to the external unit based on the identificationinformation.
 13. The non-contact charger according to claim 12, whereinthe identification information comprises an optimum voltage condition ofthe external unit.
 14. The non-contact charger according to claim 12,wherein the identification information comprises a power saver code forreducing an electric power in the non-contact charger.
 15. Thenon-contact charger according to claim 12, wherein the current sensor isconfigured to adjust the electric power signal generated in the primarycoil based on the identification information.
 16. The non-contactcharger according to claim 12, wherein the current sensor is configuredto adjust a frequency of the electric power signal based on theidentification information.
 17. The non-contact charger according toclaim 12, wherein the current sensor generates PWM pulses having aconstant interval in the primary coil.
 18. The non-contact chargeraccording to claim 12, wherein the current sensor determines whether theidentification information contains a predetermined signal unique to theexternal unit.
 19. The non-contact charger according to claim 18,wherein, when the current sensor determines that the identificationinformation contains the predetermined signal, the primary coilwirelessly transmits the electric power signal to the external unit. 20.The non-contact charger according to claim 18, wherein, when the currentsensor determines that the identification information does not containthe predetermined signal or fails to receive the identificationinformation, the primary coil disables transmission of the electricpower signal to the external unit.
 21. A battery pack comprising: arechargeable battery cell; a charger body comprising an induction coiland configured to receive a power signal through a magnetic fieldinduced by the induction coil; a charger controller coupled to theinduction coil to process the power signal and transmit the processedpower signal to the battery cell; and a shielding member disposedbetween a surface of the battery cell and the induction coil, whereinthe shielding member comprises a board in the form of a mesh comprisingNi—Cu compound.
 22. The battery pack according to claim 21, wherein theshielding member further comprises a plate made of a metal alloycomprising Al, Cu, and Ni.
 23. The battery pack according to claim 21,wherein the shielding member insulates the battery cell from theinduction coil.
 24. A method for wirelessly charging an objectcomprising: connecting a non-contact charger to a communication port ofa computer and receiving a power signal and a data signal from thecomputer; generating an input data based on the data signal receivedfrom the computer; converting the generated input data to a transmissionsignal to wirelessly transmit the input data to a target object; andgenerating an induced electromotive force in an induction coil based onthe transmission signal to wirelessly transmit the input data to thetarget object along with an input power signal for the target object.25. The method according to claim 24, wherein the input power signalcomprises a power source for the target object.
 26. The method accordingto claim 24, wherein connecting the non-contact charger to thecommunication port comprises connecting through a USB connector.
 27. Themethod according to claim 24, wherein the power signal comprises a powersource for the non-contact charger.
 28. The method according to claim27, further comprising converting the data signal received from thecomputer to an IrDA signal and transmitting the IrDA signal to thetarget object.
 29. A method for wirelessly charging an objectcomprising: connecting a non-contact charger to a communication port ofa computer and receiving a power signal and a data signal from thecomputer; generating an induced electromotive force in an induction coilbased on the power signal and wirelessly transmit the power signal to atarget object; converting the data signal to an IrDA signal; andwirelessly transmitting the converted IrDA signal to the target object.30. The method according to claim 29, wherein connecting the non-contactcharger to the communication port comprises connecting through a USBconnector.
 31. The method according to claim 29, wherein the powersignal comprises a power source for the non-contact charger.
 32. Amethod for wirelessly charging an external unit, comprising: generatingan electric power signal in a primary coil and transmitting thegenerated electric power signal to an external unit; receiving anelectromotive force generated by the external unit; generating aninductive current in the primary coil in response to the electromotiveforce; monitoring the inductive current in the primary coil to obtainidentification information of the external unit; and controlling thetransmission of the generated electric power signal from the primarycoil to the external unit based on the identification information. 33.The method according to claim 32, wherein the identification informationcomprises an optimum voltage condition of the external unit.
 34. Themethod according to claim 32, wherein the identification informationcomprises a power saver code for reducing an electric power in thenon-contact charger.
 35. The method according to claim 32, whereincontrolling the transmission of the generated electric power signalcomprises adjusting the electric power signal generated in the primarycoil based on the identification information.
 36. The method accordingto claim 35, wherein adjusting the electric power signal comprisesadjusting a frequency of the electric power signal based on theidentification information.
 37. The method according to claim 32,wherein controlling the transmission of the generated electric powersignal comprises generating PWM pulses having a constant interval in theprimary coil.
 38. The method according to claim 32, further comprisingdetermining whether the identification information contains apredetermined signal unique to the external unit.
 39. The methodaccording to claim 38, further comprising disabling the transmission ofthe electric power signal to the external unit if the current sensordetermines that the identification information does not contain thepredetermined signal or fails to receive the identification information.40. A method of shielding a battery cell in a battery pack, wherein thebattery pack comprises a rechargeable battery cell and an induction coilconfigured to receive a power signal through a magnetic field induced bythe induction coil, the method comprising: shielding a surface of thebattery cell from the induction coil by providing a shielding memberdisposed between the surface of the battery cell and the induction coil,wherein the shielding member comprises a board in the form of a meshcomprising Ni—Cu compound.
 41. The method according to claim 40, whereinthe shielding member further comprises a plate made of a metal alloycomprising Al, Cu, and Ni.
 42. The method according to claim 40, whereinthe shielding member insulates the battery cell from the induction coil.43. A non-contact charger comprising: a resonant converter which makes acurrent into a half wave or full wave to transmit an electric power to asecondary coil of a device; a primary coil which transmits an ID checksignal and transmits the electric power to the secondary coil by meansof inductive coupling for charging; and a current sensing block whichdetects at least one of the device and a foreign substance based on adetected signal which is received in response to the ID check signal,wherein based on a power curve, the electric power falls down along withthe charging, wherein the power curve includes a hysteresis period andthe current sensing block detects the foreign substance if the detectedsignal goes beyond the hysteresis period.
 44. The non-contact charger inaccordance with claim 43, wherein the current sensing block detects theforeign substance if the detected signal is not a normal signal or ifthere is no response to the ID check signal.
 45. The non-contact chargerin accordance with claim 43, wherein the current sensing block detectsthe device if the detected signal is a unique ID of the device.
 46. Thenon-contact charger in accordance with claim 43, wherein the primarycoil transmits the ID check signal in a constant interval.
 47. Thenon-contact charger in accordance with claim 43, wherein the ID checksignal includes a PWM pulse.
 48. The non-contact charger in accordancewith claim 43, wherein the device includes a battery pack or a mobiledevice.
 49. The non-contact charger in accordance with claim 43, whereinthe primary coil transmits the ID check signal when the phase of thecurrent is changed to a certain level due to approaching of the foreignsubstance.
 50. A method of non-contact charging comprising: making acurrent into a half wave or full wave to transmit an electric power to asecondary coil of a device; transmitting an ID check signal or theelectric power to the secondary coil by means of inductive coupling forcharging; and detecting at least one of the device and a foreignsubstance based on a detected signal which is received in response tothe ID check signal, wherein based on a power curve, the electric powerfalls down along with the charging, wherein the power curve includes ahysteresis period and the foreign substance is detected if the detectedsignal goes beyond the hysteresis period.
 51. The method in accordancewith claim 50, wherein the foreign substance is detected if the detectedsignal is not a normal signal or if there is no response to the ID checksignal.
 52. The method in accordance with claim 50, wherein the deviceis detected if the detected signal is a unique ID of the device.
 53. Themethod in accordance with claim 50, wherein the ID check signal istransmitted in a constant interval.
 54. The method in accordance withclaim 50, wherein the ID check signal includes a PWM pulse.
 55. Themethod in accordance with claim 50, wherein the device includes abattery pack or a mobile device.
 56. The method in accordance with claim50, wherein the ID check signal is transmitted when the phase of thecurrent is changed to a certain level due to approaching of the foreignsubstance.